BIG SPOILER (kinda) for DOCTOR WHO SERIES/SEASON 5! Go away if you want to be unspoilt!
[Looks around. OK, good.]
I make no assumptions about her at the moment; Billie Piper wasn't known as an actress before Doctor Who and she turned out brilliantly. We'll see.
So now we have a new show runner, a new Doctor, and a new companion! I'm even more excited now about seeing the specials coming out this year and the next, leading into a new chapter for my favorite TV show.